Air Properties - SI Units
Ideal gas properties of air at low pressures - in SI units
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Some ideal gas properties of air at low pressure are indicated in the table below:
| Temperature - T - (K) |
Enthalpy - h - (kJ/kg) |
Prandtl's number Pr |
Internal Energy - u - (kJ/kg) |
Specific Volume - vr - |
| 200 | 200 | 0.336 | 143 | 1707 |
| 250 | 250 | 0.733 | 178 | 979 |
| 300 | 300 | 1.39 | 214 | 621 |
| 350 | 350 | 2.38 | 250 | 422 |
| 400 | 401 | 3.81 | 286 | 302 |
| 450 | 452 | 5.76 | 323 | 224 |
| 500 | 503 | 8.41 | 359 | 171 |
| 550 | 555 | 11.9 | 397 | 133 |
| 600 | 607 | 16.3 | 435 | 106 |
| 650 | 660 | 21.9 | 473 | 85 |
| 700 | 713 | 28.8 | 512 | 70 |
| 750 | 767 | 37.4 | 552 | 58 |
| 800 | 822 | 47.8 | 592 | 48 |
| 900 | 933 | 75.3 | 675 | 34.3 |
| 1000 | 1046 | 114 | 759 | 25.2 |
| 1100 | 1161 | 167 | 845 | 18.9 |
| 1200 | 1278 | 238 | 933 | 14.5 |
| 1300 | 1396 | 331 | 1023 | 11.3 |
| 1400 | 1515 | 451 | 1114 | 8.9 |
| 1500 | 1636 | 602 | 1205 | 7.2 |
| 1600 | 1758 | 791 | 1298 | 5.8 |
| 1700 | 1880 | 1025 | 1392 | 4.8 |
| 1800 | 2003 | 1310 | 1487 | 3.9 |
| 1900 | 2127 | 1655 | 1583 | 3.3 |
| 2000 | 2252 | 2068 | 1679 | 2.8 |
| 2100 | 2377 | 2559 | 1775 | 2.4 |
| 2200 | 2503 | 3138 | 1872 | 2.0 |
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